I'm with Jo on this. Con Air was just loud and splodey, with some dull quiet bits in between. I could sit through it, but would resent actually paying to!
The Hot Shots! movies were proper action spoofs (there may be others that I can't think of right now, but they are rare). Pretty much all modern action movies are some mixture of action, sex and jokes, with the emphasis on the action. If the jokes aren't great, it better have some impressive/original action. Thrillers are a different beast (although you can have an action-thriller, but I don't think anyone's claiming this of Con-Air!).
If you want to BE a spoof, you have to be spoofing something. You can't have people pointlessly killing each-other and just claim it's ironic. It's like spoofing gratuitous nudity by fliming ... gratuitous nudity.